Hi Wang, > As the program needs, it continues to invoke alloc_pages to get pages > to use. But when the machine's free memory drops to a certain value, > the alloc_pages will cause the system to crash.I want to ask if there > is some mechanism to block the process of alloc_pages until there is > enough free memory to alloc for it. Thanks!~ The answer lies in the GFP mask that is passed to alloc_pages(). Please see "include/linux/gfp.h". All the flags that have __GFP_WAIT specified enable the kernel to put the calling process to sleep while waiting for memory to get free. Thanks, Rajat -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
